@Morgan12 At it's worst it was approx £300 a day. Sometimes more on a weekend.
I knew there was something not quite right with him, I returned early from a weekend away with the kids and he had locked us out. I climbed through an open kitchen window and there was coke all over the kitchen.
I think he does still take it occasionally, I can tell just by looking at him, but don't know for sure as we are no longer together.
@RainSim he first took it on a night out at 18, then gradually it was every weekend and when that wasn't enough it was all day, most days. I think taking it over time will lead to addiction, one or two lines doesn't give you the same buzz if it becomes a regular thing.